Pith Number

pith:Z3V6VHMT

pith:2018:Z3V6VHMTMR3CU2FBGX5YP7V7D4

not attested not anchored not stored refs pending

A torus model for optical flow

Brittany Carr, Henry Adams, Johnathan Bush, Joshua Mirth, Lara Kassab

arxiv:1812.00875 v2 · 2018-11-09 · cs.CV · math.AT

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{Z3V6VHMTMR3CU2FBGX5YP7V7D4}

Prints a linked badge after your title and injects PDF metadata. Compiles on arXiv. Learn more · Embed verified badge

Record completeness

1 Bitcoin timestamp

2 Internet Archive

3 Author claim open · sign in to claim

4 Citations open

5 Replications open

✓ Portable graph bundle live · download bundle · merged state

The bundle contains the canonical record plus signed events. A mirror can host it anywhere and recompute the same current state with the deterministic merge algorithm.

Receipt and verification

First computed	2026-07-05T01:17:55.901773Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

ceebea9d9364762a68a135fb87febf1f31a19e5288d851a00497d6a5e9243449

Aliases

arxiv: 1812.00875 · arxiv_version: 1812.00875v2 · doi: 10.48550/arxiv.1812.00875 · pith_short_12: Z3V6VHMTMR3C · pith_short_16: Z3V6VHMTMR3CU2FB · pith_short_8: Z3V6VHMT

Agent API

Resolver JSON Graph JSON Events JSON Schema Signing key

Verify this Pith Number yourself

curl -sH 'Accept: application/ld+json' https://pith.science/pith/Z3V6VHMTMR3CU2FBGX5YP7V7D4 \
  | jq -c '.canonical_record' \
  | python3 -c "import sys,json,hashlib; b=json.dumps(json.loads(sys.stdin.read()), sort_keys=True, separators=(',',':'), ensure_ascii=False).encode(); print(hashlib.sha256(b).hexdigest())"
# expect: ceebea9d9364762a68a135fb87febf1f31a19e5288d851a00497d6a5e9243449

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "6a3aef5653a1bf335f52ec79ca81b40dfb976627c26fe93adb6fe3adb7d941a6",
    "cross_cats_sorted": [
      "math.AT"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CV",
    "submitted_at": "2018-11-09T22:50:29Z",
    "title_canon_sha256": "de83296afe8a418d0372173553f7c0e1495d4712831c6173d72cdb923fa5f687"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1812.00875",
    "kind": "arxiv",
    "version": 2
  }
}